Question

mass in grams of 9.42 x 10^24 of methanol (CH3OH)

Answer 1

I assume that number is in moles?
find the molar mass by using the mass given in the periodic table
\[C+3(H)+O+H= molarmass\]
once you find that you can do this equation:
\[9.42 x 10^{24}molesCH_{3}OH*\frac{molarmass}{1mole}\]
this will give you the mass in grams for CH3OH.